Tracy Chapman (born March 30, 1964) is an American singer-songwriter. She was signed to Elektra Records by Bob Krasnow in 1987. The following year she released her self-titled debut album, which becam
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6ea47409ca7f0d634186517ee16c1371135703427d5508d31fb2941efeddea. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e84f19e9-3e7e-4220-a6f6-3e3a6cee0060.json and https://artists.proofprofile.net/proofs/artist/e84f19e9-3e7e-4220-a6f6-3e3a6cee0060.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb19a634e95735d29c7c8383266ebed856d7083b953b8077c35beebcce29a0d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49470d416b237c458e55e34a5213d2e3e51ba9d2173ba1d09dca804ea8094ce1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d017b5ff17ceb1aa301a0eac8529d718eec24cd8485b690f378bc96f16438e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a14445663a7eba9bab2655d6b8f0fa645d0c01a8331f279ef00bc4ffec3cfbb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a792bd547af77b25a3e5e649463b1cd0403cc84b1a968fc1b65c7054d7bee0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e27abd2fd99ec336b666245e5cbcde07acf69d5003c4231f8eeaf9d6847f917. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646b714f8d55960a17c2c2d67de6da2d9a85f766f89a2a1dcf2662f444bf2792. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a115aad119587121f9f6b575118ed48ef14ccc95f3834751be46cf5a5ae3e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59569100c4f6ca17cff2e38de071871909143c5e1baf8779d2ca76004980fb2b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e1cf3ca214d90498a90b600a4012521f2ca0dbf53f48ac74947187259a384. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c625d5488d3a622db58dabfec80685f86768355649cad7a1c5a0299b7d6a325. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62398a0b5ca44fb4e5069f7f20e3ee0c3c0e5448aab4c40262ff919861a0c67a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE10100547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f853c3c7387fef7a3b4fa68e26cbb6232668df0db4c1c8b9e71cf892f2ac7f9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE10180719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5e564024d884dd17060bd380b043c6fca58f6f0640dca1fdcf6e15b4a39278. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSV10500013.
Get Up! Stand Up! (Highlights from the Human Rights Concerts 1986-1998)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4e98a9311303b247385bc567c2335a06f43fac4b348f0a0e6c8575aabd9af5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCBR1600491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174ba76a47b28e06c5d5829076df0febd981e8b8c72dfd8751f98f53aed17f9a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCBR1300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65818ea4b4a9aa3188730248420813ef2b7514461a4bae8a433e4090168fb815. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCBR1300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53284d43eedfbcbbf12e4879d6cc7785182dc53fc280db86a1d387669afb4e00. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUG10400567.